[TCML] PFC Question (again)

[Ed Phillips]

    I can't answer the original question here but want to pose one of my 
own which I've asked before without any real answer.  How can ANY 
program determine the "correct PFC" value?  With a low-reactance 
transformer and capacitive load I would think the power factor at the 
primary terminals would already be leading and added shunt capacitance 
would only increase the line current.  It's pretty obvious that when a 
high-reactance transformer like an NST or OBIT is connected to a 
resistive load the input PF will be lagging and shunt capacitance can 
reduce line current but beyond that how can any generalities apply?????

    How much of useage of  power-factor correction is factual and how 
much is urban myth?

Ed